After speculation, spy shots and renderings, the 2010 Devon GTX finally made its debut on the 18th hole of Pebble Beach, with the hope of ushering in a new era of American supercar dominance.

The California-based design studio and upstart automaker created the GTX as an American answer to the ultra-exclusive sports cars hailing from Europe. Housed within the steel structure and carbon fiber body lies an 8.4-liter V10 putting 650 hp (at 6,100 rpm) to the rear wheels through a six-speed manual gearbox.

When the GTX goes on sale early next year, the coupe will be available in two flavors – a standard version and a more track-focused variant – each equipped with a fully independent suspension (a real-time damping and ride-height adjustment system will be available in late 2010), obscured by 18x10-inch (front) and 19x13-inch (rear) wheels (19s and 20s are an available upgrade), wrapped in Z-rated Michelin Pilot Sport 2 rubber. Six piston brakes clamp onto 380mm discs in front, while four piston calipers grapple with 355mm rotors in the rear.

Devon plans to produce 36 cars each year, carrying a price tag of $500,000, with a racing package commanding another $25,000. Get all the details in the press release below the fold, and check out both galleries of the GTX below.

America does horsepower, it even does handling, but aside from the Corvette ZR1, it doesn't really do supercars. At least not in the modern sense of the word. But one company, Devon Motorworks, hopes to change that perception. It's off to a good start, claiming to have set the unofficial production car lap record at Mazda Raceway Laguna Seca in California - and now we have a video of the lap.

The GTX is due for its official debut this weekend at the Pebble Beach Concours d'Elegance, but the company is still playing the car's specifications close to its vest, but they have released the Laguna Seca lap time of 1:35.075. The company says that's a production-car record, beating out the likes of the Nissan GT-R, Porsche 911 Turbo and Corvette ZR-1.

The last we heard from Devon was the company's $5.5 million low-ball bid for Chrysler's Viper brand back before the bankruptcy and eventual Fiat acquistition. The company had hoped to use the Viper plant to build its very own supercar, the GTX. While not much is known about the GTX, purchasing the Viper business would have allowed Devon to base the car around the renowned Viper platform.

We should know much more about the GTX on Saturday, when a prototype of the car is revealed at the Pebble Beach Concours.

“There is no more important event in the world for cars in this class,” says Devon Motorworks CEO and founder Scott Devon. “We realize that – by introducing the Devon GTX at the Concours d’Elegance – we are asking the world’s automotive elite to bless this car. With its bold design and outstanding performance characteristics, we are quite confident we will earn their approval.”

The company is also expected to attempt to break the world lap record for a production car at the Nurburgring this summer, so keep an eye out for news of that as well.

What we know so far is that the car’s design is being handled by noted Swedish designer and former Ford employee Daniel Paulin. Previewed here in these official computer generated renderings, Paulin's new design language gives the GTX a classical yet futuristic line. The interior of the GTX will appear Spartan but will be packed with high-tech gear.

To see the unofficial Laguna Seca record production car lap, check out the video below.